Thanks, that confirmed that there is a problem in the replication. These users exist in the production database but not in the labs databases that are available for us. I have filed this bug to track the issue: https://bugzilla.wikimedia.org/show_bug.cgi?id=72908 We will update that as soon as we resolve the problem. Thanks again for the report. Dan On Mon, Nov 3, 2014 at 10:57 AM, Vojtěch Dostál &lt;vojtech.dostal(a)wikimedia.cz > Hi! Thanks for assistance. This is Czech Wikipedia, sorry for not > mentioning that. > > See for yourself the 3 problematic cases: > > > https://cs.wikipedia.org/wiki/Speci%C3%A1ln%C3%AD:Protokolovac%C3%AD_z%C3%A… > > https://cs.wikipedia.org/wiki/Speci%C3%A1ln%C3%AD:Protokolovac%C3%AD_z%C3%A… > https://cs.wikipedia.org/wiki/Wikipedistka:VlaMaul > > > Vojtěch Dostál > > místopředseda > Wikimedia Česká republika > Konopišťská 790/3, Praha 10 > http://www.wikimedia.cz > > 2014-11-03 15:54 GMT+00:00 Dan Andreescu &lt;dandreescu(a)wikimedia.org&gt;rg>: > >> Hi Vojtěch, >> >> Which project are you trying to validate those users on? I can take a >> look. If they're registered users on that project, but they just signed >> up, sometimes we have replication lag and they can take a day or so to get >> into the labs databases where we read from. >> >> On Mon, Nov 3, 2014 at 4:23 AM, Vojtěch Dostál < >> vojtech.dostal(a)wikimedia.cz>> >>> Hi, I tried to upload the following list of usernames: >>> >>> Opice1956 >>> Rowerin >>> Melanie anna >>> Bonifac-cz >>> Jistefi >>> Bačkovská >>> Lidabey >>> NŠO-ČI >>> Stana123 >>> Pauza >>> OmaOla >>> Antonín Ryska >>> Libuše Kroková >>> VETA 7O >>> Ilča53 >>> Wlady >>> Markéta z e Lhoty >>> Klenča >>> VlaMaul >>> >>> I extracted this list of usernames from the ListStudents API. Strangely, >>> three usernames are not valid when uploaded to Wikimetrics: >>> >>> Jistefi invalid user_name Pauza invalid user_name VlaMaul invalid >>> user_name >>> Do you have any idea why these? The order of usernames does not seem to >>> produce any difference, it is always these three. >>> >>> thanks >>> >>> Vojtěch Dostál >>> >>> místopředseda >>> Wikimedia Česká republika >>> Konopišťská 790/3, Praha 10 >>> http://www.wikimedia.cz >>> >>> _______________________________________________ >>> Wikimetrics mailing list >>> Wikimetrics(a)lists.wikimedia.org >>> https://lists.wikimedia.org/mailman/listinfo/wikimetrics >>> >>> >> >> _______________________________________________ >> Wikimetrics mailing list >> Wikimetrics(a)lists.wikimedia.org >> https://lists.wikimedia.org/mailman/listinfo/wikimetrics >> >> > > _______________________________________________ > Wikimetrics mailing list > Wikimetrics(a)lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wikimetrics > >